JPH0732178Y2 - Automotive air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle in which the operation force of a door is reduced when the mode is changed. Regarding the harmony device.

(Prior Art) Generally, an air conditioner for a vehicle has an intake unit for introducing outside air or inside air, a cooler unit for cooling the air introduced by the intake unit, and a predetermined amount of air cooled by the cooler unit. The heater units that adjust the temperature and blow out the air to a predetermined location in the vehicle interior according to the selected mode are connected in series.

As shown in FIG. 4, the heater unit 1 includes a differential air outlet 2 for blowing air adjusted to a predetermined temperature toward the inner surface of the windshield, and a rear portion of the air from the center of the front surface of the vehicle. Vent outlet 3 for blowing out toward
And a foot outlet 4 for ejecting the air to the feet of the front seat occupants. These outlets 2, 3, 4 are a differential door 5, a vent door 6, and a foot door for opening and closing the outlet. 7 are provided respectively.

Then, the differential door 5, the vent door 6, and the foot door 7 are set to a predetermined opening degree according to the air conditioning mode selected by the occupant, but the opening degree of these doors 5, 6, 7 is generally set. Is simultaneously set for each door via a link mechanism (not shown) that is rotated in conjunction with movement of a lever operated by an occupant.

For example, in FIG. 4, when the air conditioning mode is set to the differential foot mode (the mode in which the air whose temperature is adjusted to a predetermined temperature is blown from the differential outlet 2 and the foot outlet 4) is set, the differential door 5 The vent door 6 and the foot door 7 are set to the positions shown by the solid lines in the figure, and the air-conditioning mode changes from this mode to the bi-level mode (head cold foot heat mode, where cold air is blown from the vent outlet 3 and warm air is blown from the foot outlet 4). When the blowout mode is set, the differential door 5 and the vent door 6 are set to the positions shown by the dotted lines in the figure.

(Problems to be Solved by the Invention) However, in such a conventional vehicle air conditioner, since the air introduced from the intake unit is delivered to the heater unit 1, the internal pressure thereof is Since the air pressure is higher than the atmospheric pressure, the door that rotates in the direction to open the air outlet at the time of switching the air conditioning mode has a direction in which the wind pressure corresponding to the amount of the air delivered prevents the rotation. Therefore, a relatively large operating force is required for the switching operation of the air conditioning mode.

For example, as described above, when the differential foot mode is set to the bi-level mode, the differential door 5 and the vent door 6 move from the solid line position to the dotted line position in FIG.
In other words, the vent door 6 has a larger area than other doors.
Is moved in the direction in which the vent outlet 3 is opened and the differential door 5 is moved in the direction in which the differential outlet 2 is closed. Therefore, the operating force of the differential door 5 that moves in the same direction as the direction in which the wind pressure acts. However, the vent door 6 that moves in the opposite direction to the direction in which the wind pressure acts requires a large operating force.

For this reason, when switching from the differential foot mode to the bi-level mode, it is necessary to move the vent door 6, which has a larger area than other doors, in the opening direction. Therefore, the mode switching operation is performed by the motor. In this case, the required torque of the motor is large, and when this switching operation is performed manually, a large operating force is required. In addition,
Japanese Patent Laid-Open No. 58-16915 discloses a device provided with a spring for urging the link mechanism in one direction in order to reduce the operating force.

Therefore, it is necessary for the motor to output this required torque, and in the case of manual operation, the operating force during mode switching is not uniform, so the mode is downsized and the operating members such as the link mechanism are made smaller and lighter. However, it is difficult to obtain the best operation feeling.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide an air conditioner for a vehicle in which an operation force of a door is reduced when a mode is changed.

[Structure of the Invention] (Means for Solving the Problems) The present invention for achieving the above-mentioned object is attached to each outlet of a heater unit constituting an air conditioner, and these outlets are individually attached. It has a door that opens and closes, and a mode setting unit that outputs a command signal for setting the air conditioning mode of the air conditioner to a predetermined mode, and each of the doors according to the command signal output from the mode setting unit. In the air conditioner for a vehicle that sets a predetermined opening degree, when a command signal is output from the mode setting means, before actuating a door that moves in a direction to open the air outlet among the respective doors. Characterized in that it has a control means that operates in a direction to open a door other than the door and then sets each door to an opening degree in a mode according to the command signal. It is intended.

(Operation) With this configuration, when the command signal is output from the mode setting means, the control means, before operating the door that moves in the direction of opening the air outlet among the respective doors,
The doors other than the door are operated in the opening direction, and each door is then set to the opening degree in the mode according to the command signal. Since the operation is performed after the received wind pressure is reduced, the motor can be downsized, the operating members such as the link mechanism can be reduced in size and weight, and the operation feeling can be improved.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a schematic configuration diagram of a heater unit in an automobile air conditioner according to the present invention, and the same members as those shown in FIG. 4 are designated by the same reference numerals.

Inside the heater unit 1, a diff door 5 and a vent door for respectively opening and closing a diff outlet 2, a vent outlet 3, and a foot outlet 4 formed in the heater unit 1.
6, foot doors 7 are provided respectively, and these doors 5, 6, 7 are connected to motors 10M, 11M, 12M via gears 10, 11, 12, respectively.
Are connected respectively. Therefore, this motor 10
When the M, 11M, and 12M rotate individually, the differential door 5, the vent door 6, and the foot door 7 rotate. Then, these motors 10M, 11M, 12M are connected to a control device 13 as a control means, and to this control device 13, as a mode setting means for outputting a command signal to set the air conditioning mode to a predetermined mode. Control panel 14
Are connected. And this control panel 14
When a command signal is output from the control device 13, the control device 13 individually controls the operation of each motor 10M, 11M, 12M according to the command signal, and sets each door 5, 6, 7 to a predetermined opening degree. It will be.

FIG. 2 shows a configuration block diagram of the control device 13.

As shown in the figure, the control unit 21 that comprehensively controls the operation of the control device 13 includes an input interface 20 for inputting a signal from the control panel 14 and a motor based on the signal output from the control panel 14. 10M, 11M, 12
A counter 22 that stores a drive pulse for operating each M is connected, and the counter 22 stores the number of pulses calculated by the control unit 21 based on the signal output from the control panel 14. become. Further, drivers 23, 24, 25 for operating the motors 10M, 11M, 12M are connected to the counter 22,
These motors 10M, 11M, 12M are driven by drivers 23, 24, 25, respectively, by an amount corresponding to the number of pulses stored in the counter 22.

The air conditioner for a vehicle of the present invention configured as described above is
It operates as follows based on the operation flowchart of FIG. It is assumed that the air conditioning mode before performing this operation is the differential foot mode (the differential door 5 is set to the C position, the vent door 6 is set to the a position, and the foot door 7 is set to the e position in FIG. 1).

First, the control unit 21 inputs a command signal regarding the air conditioning mode output from the control panel 14 via the input interface 20 (S1), and determines whether or not the command signal is the bilevel mode. If the result of this determination is that it is in the bi-level mode, the following processing is carried out, and if it is not in the bi-level mode, it waits until the bi-level mode command signal is output (S2).

When the control unit 21 receives the bilevel mode command signal,
Open the differential door 5 and the foot door 7 at a predetermined opening (f in FIG. 1).
And the g position) to calculate the number of pulses required to operate, and output the calculated number of pulses to the counter 22 (S
3). Then, the drivers 23 and 25 operate the motors 10M and 12M by the amounts corresponding to the pulses stored in the counter 22 to set the differential door 5 and the foot door 7 to the positions f and g in FIG. The number of pulses stored in the counter 22 is set by the drivers 23 and 25 to set the motors 10M and 12M to 1
The control unit 21 subtracts each time the pulse is driven, and the determination in S4 is that the control unit 21 determines that the number of pulses currently stored in the counter 22 has become zero. (S4, S5).

In this way, the differential door 5 and the foot door 7 are f in FIG.
And g position, the control unit 21 calculates the number of pulses necessary for operating the vent door 6 up to a predetermined opening (position b in FIG. 1) in the bilevel mode. Output the number of pulses to the counter 22 (S
6). Then, the drivers 23 and 25 operate the motor 11M by an amount corresponding to the pulse stored in the counter 22 and set the vent door 6 to the position b in FIG. 1 (S7, S).
8).

Further, the control unit 21 calculates the number of pulses required to operate the differential door 5 and the foot door 7 up to a predetermined opening (positions d and e in FIG. 1) in the bilevel mode, and calculates the calculated number of pulses. Output to the counter 22 (S9). Then, the drivers 23 and 25 operate the motors 10M and 12M by an amount corresponding to the pulse stored in the counter 22,
The differential door 5 and the foot door 7 are set to the positions d and e in FIG. 1, and the process is finished (S10, S11).

In this way, when changing the mode from the differential foot mode to the bi-level mode, first, before moving the vent door 6 having a large wind pressure, the differential door 5 and the foot door 7 are opened to adjust the internal pressure of the heater unit 1. After lowering, the vent door 6 is opened and the differential door 5 and the foot door 7 are set at predetermined positions in the bilevel mode.

Therefore, the operating force of the vent door 6 becomes small, and accordingly, the motor can be made smaller, the operating member can be made smaller and lighter, and the operation feeling can be improved in the case of a manually operated type.

It should be noted that, in the present embodiment, the mode is illustrated as an example in which the mode is changed from the differential foot mode to the bi-level mode, but the mode is not limited to this, and it goes without saying that the mode is also applied in other modes. is there.

Further, in this embodiment, both the differential and foot doors are moved in the opening direction when the mode is changed, but the present invention is not limited to this, and either the differential door or the foot door may be moved in the opening direction. May be.

Further, in the present embodiment, the type in which each door is driven by an individual motor when changing the air conditioning mode is illustrated, but the type in which the link mechanism is driven by a motor or the type in which the link mechanism is manually driven is illustrated. However, it goes without saying that the present invention can be applied.

[Effect of the Invention] As is apparent from the above description, in the present invention, when the command signal is output from the mode setting means, among the respective doors, the door that moves in the direction to open the air outlet operates. Previously, the doors other than the door were actuated in the opening direction, and then the respective doors were set to the opening degree in the mode according to the command signal. The door is operated after the air pressure received by the door is reduced, so that the motor can be downsized, the operating members such as the link mechanism can be reduced in size and weight, and the operation feeling can be improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an automobile air conditioner according to the present invention, FIG. 2 is a schematic configuration diagram of a vehicle air conditioner control device according to the present invention, and FIG. 3 is shown in FIG. An operation flowchart of the control device shown in FIG. 4 is a schematic configuration diagram of a heater unit in a general vehicle air conditioner. 1 ... Heater unit, 2 ... Differential outlet, 3 ... Vent outlet, 4 ... Foot outlet, 5 ... Differential door, 6
...... Vent door, 7 ...... Foot door, 13 ...... Control device (control means), 14 ...... Control panel (mode setting means)

Claims (1)

[Scope of utility model registration request] 1. A door (1) attached to each outlet (2,3,4) of a heater unit (1) which constitutes an air conditioner and which individually opens and closes these outlets (2,3,4). 5,6,7)
And a mode setting means (14) for outputting a command signal for setting the air conditioning mode of the air conditioner to a predetermined mode, and according to the command signal output from the mode setting means (14), In an automobile air conditioner that sets the respective doors (5, 6, 7) to a predetermined opening degree, when a command signal is output from the mode setting means (14), the respective doors (5, 6, Before the door that moves in the direction to open the outlet (2,3,4) among 7) is activated,
It is characterized by having a control means (13) that operates in a direction to open a door other than the door and then sets each door (5, 6, 7) to an opening degree in a mode according to the command signal. Automotive air conditioner.